Epilobium. ONAGRACEyE. 487 



or revolute lobes. Capsule linear, 4-sidcil, 4-celled, 4-valve(I. Seeds nu- 

 merous, ascending ; the clialaza furnished with a coma or tuft of long hairs. 

 —Perennial herbs, with alternate or opposite nearly sessile denticulate or 

 entire leaves, often fascicled. Flowers rose-color, purple, or white, very 

 rarely yellow, nodding before expansion. 



§ 1 . Flowers large, {purple or violet) : limb of the calyx divided nearly to 

 the apex of the ovary, often colored, spreading : petals spreading, entire : 

 stamens and style declined or dejlexed : lobes of the stigma linear {ovules 

 in 2 rows, Spach) : leaves scattered. — Chamjenerion, Touni. 



•"l. E. angustifolium (Linn.) : stem erect, simple, mostly glabrous ; leaves 

 sessile, lanceolate, nearly entire or with slightly undulate margins, the veins 

 pellucid ; flowers in a long spicate raceme, bracteate ; petals unguiculate, 

 obovate ; st^le at length deflexed. — Linn.! spec. 1. p. 347; Engl. bot. t. 

 1947; Michx.! fl. 1. p. 223; Lehm.! in Hook. fl. Bor.-Am. 1. p. 205. 

 E. spicatum, Lam. diet. 2. p. 273, Sfill. gen. t. 278 ; Torr.! fl. 1. p. 391 ; 

 DC! prodr. 3. p. 40. 



In waste places and along streams, especially where forests have been 

 recently cut down. Pennsylvania! and New England States! to New- 

 foundland ! Arctic America to lat. 69°, N. W. Coast and Islands ! and 

 Oregon! July. — H Stem often 4-6 feet high. Flowers large, in a virgate 

 raceme, purplish-lilac-color (sometimes white, Pursh). Style about the 

 length of the stamens, hairy at the base, or glabrous. Capsules canescent. 

 Willoiv-hcrb. 



'/"'2. E. latifolium (Linn.) : stem ascending, often branched ; leaves ovate 

 or ovate-lanceolate, sessile, nearly entire, somewhat pubescent, rather thick 

 and rigid, the veins not apparent; flowers axUlary and terminal, on short 

 pedicels ; style somewhat erect, glabrous, shorter than the stamens. 

 —Linn. ! siyec. \.p. 347 ; Fl. Dan. t. 365 ; Pursh, fl. 1. p. 259 ; Lehm. ! 

 in Hook. I. c. 



p. leaves narrowly lanceolate, entire ; stem and flowers smaller. Pursh, I. c. 



Throughout Arctic America from Greenland ! and Labrador ! to Sitcha! 

 and Kotzebue's Sound ! and on the Rocky Mountains to lat. 52°, Douglas ! 

 — 11 Flowers larger than in E. angustifolium, pur])le. Capsules canescent. 



3. E. opacum (Lehm.) : stem erect, pubescent ; leaves nearly sessile, nar- 

 rowly lanceolate, mostly entire; the veins opaque ; flowers (few) axillary, 

 solitary, peduncled ; style reflexed, glabrous, shorter than the stamens. — 

 Lehm. ! in Hook. fl. Bor.-Am. 1. p. 205. 



Banks of the Oregon, Douglas ! Dr. Scouler ! — The flowers and capsules, 

 according to Lehmann, resemble those of E. latifolium, but the leaves are 

 more like E. angustifolium. 



§ 2. Flowers large, yelloic : limb of the calyx divided to the apex of the ova- 

 ry, erect-spreading : petals somewhat spreading, obcordate : stamens erect, 

 included : style filiform, exserted, slightly declined : stigma thick ; the 

 lobes o'oal, dilated : coma of the seeds short, ferruginous : loiver leaves op- 

 posite, the upper alternate. — Chrysonekion. 



4. E. luteum (Pursh) : stem erect, marked with 2-4 decurrent pubescent, 

 lines ; leaves ovate-lanceolate, sessile, membranaceous, glabrous, denticulate 



